== sanity test 255a: check 'lfs ladvise -a willread' ===== 07:58:33 (1786103913)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 9.062 s, 11.6 MB/s
ladvise: range [2, 1] is invalid
Provide servers with advice about access patterns for a file.
usage: ladvise [--advice|-a ADVICE] [--start|-s START[kMGT]]
               [--background|-b] [--unset|-u]

               {--end|-e END[kMGT]|--length|-l LENGTH[kMGT]}
               {[--mode|-m [READ,WRITE]}
               <file> ...

ladvise: range [2, 2] is invalid
Provide servers with advice about access patterns for a file.
usage: ladvise [--advice|-a ADVICE] [--start|-s START[kMGT]]
               [--background|-b] [--unset|-u]

               {--end|-e END[kMGT]|--length|-l LENGTH[kMGT]}
               {[--mode|-m [READ,WRITE]}
               <file> ...

ladvise: conflicting arguments of -l and -e
Provide servers with advice about access patterns for a file.
usage: ladvise [--advice|-a ADVICE] [--start|-s START[kMGT]]
               [--background|-b] [--unset|-u]

               {--end|-e END[kMGT]|--length|-l LENGTH[kMGT]}
               {[--mode|-m [READ,WRITE]}
               <file> ...

Synchronous ladvise should wait
fail_val=8
fail_loc=0x237
Asynchronous ladvise shouldn't wait
llite.lustre-ffff99d0c9cd0800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.455683
Iter 1/10: OSS cache speed: 0.412612
Iter 1/10: ladvise speed: 0.433646
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.425048
Iter 2/10: OSS cache speed: 0.408854
Iter 2/10: ladvise speed: 0.453185
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.430443
Iter 3/10: OSS cache speed: 0.448278
Iter 3/10: ladvise speed: 0.405735
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.425213
Iter 4/10: OSS cache speed: 0.423442
Iter 4/10: ladvise speed: 0.407147
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.433991
Iter 5/10: OSS cache speed: 0.424107
Iter 5/10: ladvise speed: 0.42581
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.436396
Iter 6/10: OSS cache speed: 0.449322
Iter 6/10: ladvise speed: 0.455236
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.424759
Iter 7/10: OSS cache speed: 0.448654
Iter 7/10: ladvise speed: 0.41849
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.440414
Iter 8/10: OSS cache speed: 0.46668
Iter 8/10: ladvise speed: 0.441838
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.420742
Iter 9/10: OSS cache speed: 0.430845
Iter 9/10: ladvise speed: 0.414754
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.417656
Iter 10/10: OSS cache speed: 0.413467
Iter 10/10: ladvise speed: 0.390636
Average uncached read: .43
Average speedup with OSS cached read:  .43 = +0%
Average speedup with ladvise willread:  .42 = +-2%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0